How well can caecilians see in their underground habitat?

Caecilians, whose name is derived from the Latin word caecus meaning "sightless" or "blind," possess degenerate eyes that are typically covered by bone or skin. Because they primarily lead subterranean lives, vision is of little importance in their environment and is not acute.123

Instead of relying on sight, these amphibians utilize other highly developed senses to navigate and survive in their underground habitat. Their nasal organs are well developed, and they possess a specialized tentacle that greatly enhances their chemoreception capabilities. These adaptations allow caecilians to effectively feed, reproduce, and avoid enemies despite their limited visual perception.31